Ignition-controller.



G. B. STONE. IGNITION CONTROLLER. APPLICATION FILED JAN. 10, 19]].

" Patented Dec. 24, 1918.

%1 ilzb um/14121 0 UNITED STATE PATENT @FFIEE. GUY s. STONE, 0E DETROIT,- MICHIGAN, AssIeNoE TO REMY ELECTRIC COMPANYJLOF ANDERSON, INDIANA, A CORPORATION 0 INDIANA.

IGNITION-CONTROLLER.

To all whom it may concern:

Be it known that I, GUY B. STONE, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Ignition-Controllers (Case B), of which the following is a full, clear, and exact description. The present invention relates to an improvement in the device shown in the Nickerson Patent No. 1,139,707, patented May 18,1915. In the Nickerson patent there is shown a device for controlling the time of ignition of an internal-combustion engine. Vacuum actuated means were provided for advancing the ignition timer, and the vacuum was produced by the vacuum in the inlet'manifold of an internal combustion engine.

One of the objects of the present inven tion resides in the provision of the device in which the vacuum will be shut off when the throttle is in substantially closed or idling position. In this way the spring which normally acts to retard the ignition timer is free to act and retards the timer to the proper extent for proper engine idling conditions.

Another object of the present invention resides in the provision of a means for metering or throttling the gas intermediate the inlet manifold and the suction device. Bv the provision of such a metering device, which metering device, it may be stated, operates in unison with the throttle, the effective suction acting in the suction device is diminished when the throttle is in comparatively closed position. When the throttle is entirely closed the suction at the suction device is entirely out 011. .Then, as the throttle is open, the metering device moves proportionately to cause more and more suction to be effective at'the suction device.

Other objects of the present invention reside in certain details which will be pointed out in more detail 'in the accompanying specification, shown in the drawings, and more particularly set forth in the appended claims.

Specification of Letters Patent.

Patented Dec. 21,1918.

- Application filed January 10, 1917. Serial No. 141,554.

In the drawings:

Figure 1 shows in side elevation and somewhat diagrammatically one embodiment of my invention. The device is shown in cooperation with an inlet manifold of an 11 is connected, l3.represents a conduit which maybe a partof the carbureter or:

of the inlet manifold,;and which-serves to conduct the fuel mixture from the carbureter tothe manifold.

Journaled in the sidewalls of the conduit 13 is a butterfly-valve 14.- having a link 15 connected thereto. To this link 15 is connected rod 16 leading to the usual controlling mechanism at a point convenient to the operator. 15 is a link 17 pivotally connected at its op posite end with an arm 18, which in turn connects with metering valve 19. Metering valve 19 is journaled in a cylindrical casing 20. Leading into this casing are two pipes 21 and 22. Pipe 21 extends downward and connects into the conduit 13 at a point be low the throttle, and pipe 22 similarly con- Also connected to the link nects with the conduit 13 at a "point above interior of the suction cylinder 25. In this,

suction cylinder there is a piston 26, and

behind the piston there is a coil spring 27.

The outer end of the piston is connected by a link 28 to an arm projectingupwardly from the timer plate 29. This timer plate carries the usual. circuit breaking lever 30, which lever cooperates with an engine drlven cam 31 to interrupt and establish the pri mary circuit at the contacts 32, 33. As the timer is of well known construction, it need not be described in more detail here, except I to the conduit 13 above the throttle.

to state that as the piston 26 moves in-' wardly in the cylinder the timing of the ignition is advanced and as it moves outwardly the timing is retarded. Normally "spring 27 moves the piston 26 in its outer position in the.cylinder as shown.

Operation of the device.

With the parts in'the position shown in Fig. 1, metering valve 19 has entirely out off communication between the interior of cylinder 25 and the intake conduit above the throttle valve 14. The pressure-then within cylinder 25 will be substantially atmospheric, and-consequently the spring will maintain the 'timer plate in the retarded position as shown. Now as the butterfly valve 14 opens, metering valve 19 turns in a counterclockwise direction, establishing a connection between port 24 and pipe 25- with pipe 22 and thereby and therethroughwith the conduit 13 above the throttle. While the engine is running there is a vacuum in the space above the throttle. Consequently, a flow of mixture starts from the space below the throttle in conduit 13 through pipe 21 past the edge of metering valve 19 and around port 24 and up through pipe 22 back The vacuum within suction cylinder 25 will de- -.,pend upon the position of the metering valve and upon the suction of the manifold above the throttle valve. The suction in the conduit 13 above throttle 14 is comparatively high when the throttle 14' is closed, and becomes less and less as this throttle opens.

- down the high pressure when the valve is'in substantially closed position and to gradually taper ofi the metering efiect as the point of the valve 19 moves toward the lower edge of port '24. With a wide open throttle, the edge of the metering valve contacts with the edge of the port and establishes a communlcation direct between the space above the throttle and the pipe 23.

The construction described provides a SIIIIPLB means of controlling the degree of efiective suction accordance with the throttle position.

With the construction shown in Fig. 2, the conduit 13 is provided with a boss 35 at onesid-e, which is internallythreaded to receive a threaded plug'36. The threaded v plug is slotted at itsupper end to receive a screw driver or similar tool. By turning the plug, its position may be adjusted with respect to boss 35, Boss 35 also is provided with a nipple 37 to which the suction pipe 23 may be connected in any desired manner. Duct 38 leads through nipple 37 and connects with an annular recess on plug 36.

From this annular recess a hole leads into the upper part 39 of a tapered hole 40, axlally disposed in plug 36. -The.hole40 ex- The The metering valve 'servesto cut in the suction cylinder in y will increase as the tends downwardly in the plug and connects with the conduit 13 above the throttle 14.

size of this hole is of gradually increasing area from the top to the bottom.

utterfly valve 14 carrles a nozzle tube v41, which extends up'into the hole 40. The

cennection between the nozzle tube and valve 14 is preferably a ball and socket joint, comprislng rounded portion 42 on nozzle tube 41, and a spring clip 43, carried by valve 14'. The nozzle tube is hollow, having duct 44'extending therethrough and through the rounded portion 42. The tube 41 is also preferably of uniform diameter from one end to the other.

With the-parts in the position shown in Fig. 2, the nozzle tube'contacts against the I sides of the tapered hole 40 and shuts ofi the connection bet-ween'space 39 and the intake manifold or'conduit 13 above'the throttle, at the same time chamber. 39 is connected to the conduit 13 below the throttle by duct the Zzle tube. It will be understood that this is the position of parts f idling timing conditions, since the pressure in space-39, pipe 23, and the suction cylinder will be the same as the pressure below the throttle in conduit '13, or substantially at atmospheric pressure. Spring-27 can then retard the ignition timing device. It will also be understood that the position of the parts to effect idling or retarding of the spark may "be adjusted relatively to the throttle position by adjusting the position of plug 36, in boss 35, in the manner heretofore explained; I

As the throttle valve opens the nozzle tube 41 will be drawn downin tapered hole 40. Gas will flowfrom below the throttle through duct 44 and then down around the outside of the nozzle tube in the tapered hole in the plug to conduit 13 above the throttle. It will also be understood that the effective pressure inthe space 39 and in the suction device will depend upon the area of the opening betweentheoutside of nozzle tube and the inside of th the plug. This area will increase more and more as the throttle opens and the effective pressure Wlll be metered less and less and e tapered hole in throttle valve opens. In

upon the suction pressure above the throttle and less and less upon. the pressure below the throttle as the throttle valve opens.

- By substituting different plugs 36, having different tapered holes '40 therein, my device can be readily adapted to various cl}- gines, which have different suction conditions in the intake manifold. The taper can be straight, or withcertain engines a curved taper may be preferable. These changes will be determined by conditions which vary for different engines and manifolds.

skilled in the art, and what I claim as my invention is more particularly pointed out in the appended claims:

1. In an ignition controller, the combination with an engine having an intake conduit; of an ignition timer; a suction-device for-setting the same, the intake conduit and the suction device; and a metering valve associated therewith for controlling the degree of vacuum in the suction device.

2. In an ignition controller, the combination with an engine having an intake conduit and a throttle valve of an engine timer;

a suction device for setting the same; a conduit connecting-the suction device and the intake manifold; and a metering .valve operating in unison with the throttle valve and adapted to vary theeflective suction pressure .in the suction device at varying throttle positions.

3. 'In an ignition controller, the combination with an engine having an intake conduit and throttle valve; timer; a suction setting device therefor; a conduit connecting the intake manifold with the suction device; valve means operating in unison with the throttle and adapted to progressively vary the effective suction upon the suction device, said valve being adapted to establish connection with the manifold above and belowthe throttle.

4. In an ignition controller, the combination with an engine having an intake conduit and a throttle valve; of an ignition timer; a suction actuated setting device therefor; a conduit connecting the suction device and the intake manifold; a throttle operated valve in the said conduit, said of an ignition valve being adapted to progressively vary the degree of efiective suction upon the suction device and to cut off the'suction when the engine is idling. p

5; In an ignition controller, the combination with an engine having an intake 'conduit and throttle valve; timer; a *suctiofi actuated therefor; a conduit connecting the intake conduit with the suction device, said conduit having provisions for receivinggases from below the throttle and for discharging them above the throttle; valve means operating in unison with the throttle for varying the rate of transfer of the gases above and below the throttle to thereby control the effective vacuum acting upon the suction device. v

6. In an ignition controller, the combination withan engine having an intake conduit and a throttle valve; of an ignition timer; a suction setting device therefor; means for conducting gases from below the throttle to the intake conduit above the' a conduit connecting of an ignition setting device throttle to" the intake conduit above the same, a duct connecting the said conducting means with the suction device, and a throttle operated valve to control the'rate of transfer of the gases through said con ducting means and being adapted to thereby control the degree of effective suction 1n the suction device having provisions for shutting off the suction when the engine is idling, thereby to permit the ignition to be retarded.

8. In an ignition controller, the comb1na tion with an engine having an intake manifold and a throttle valve; of an ignitlon timer; a suction device for setting the same; a conduit connecting the suction device and the intake conduit, a valve assoclated therewith and having provisions for receiving gases from below the throttle and for discharging the same into the intake conduit above the throttle, said valve having provisions for establishing a connection between the suction device and the intake con duit below the throttle when the engine 1s. idling, and being adapted to shut 05 the connection'between the suction device and the intake conduit above the throttle when the engine is idling; and means for operating the said valve in unison with the throttle. l

9. In an ignition controller, the comblna tion with an engine having an lIlllitkG CfJIlduit and a throttle valve; of an 1gn1t1on timer a suction actuated setting dev ce there for; a conduit connecting the lntake condu t with the suction setting device, sald condult having provisions for receiving gases from below the throttle and for discharging them above the throttle; and means for varying the rate of transfer of the gases above and below the throttle thereby to control the effective vacuum acting upon the suction device.

10. In an ignition controller, the combination with an engine having an intake eondult and a throttle valve; of an ignitlon tlmer; a suction actuated setting device therefor; means providing for passages between the suction setting device and the intake conduit at different portions thereof and means for restricting the passages in varying proportions the one to the other. v

11. In an ignition controller, the combmatimer; a suction actua-ted setting device passage;

therefor; means providing for passages between the suction setting device and the intake conduit at different portions thereof; and means controlled by the movement of the throttle for restricting the passages in varying proportions the one to the other, said means being effective over 'a certain range of throttle movement.

12. In an ignition controller,

the combination with an engine havmg an intake conduit and a throttle valve; of an ignition timer; a suction actuated setting device therefor; means providing for passages between the suction setting device and the intake conduit at diflerent portions thereof; and means cont'rolledbythe movement of the throttle for varying proporrestricting the passages in tions the one to the other, said means being efiective over a certain range -of throttle movement, said means bein adjustable whereby said means may be ma e to act over a diflerent range of throttle movement. r

13. In an ignition controller, the combination with an engine having an intake conduit and a throttle valve; of an ignition timer; a suction actuated setting device therefor means providing a passage between the suction setting device and the intake conduit; meanscontrolledby the movement of the throttle for cutting off the suction in the said means being adjustable whereby the relation of the the cutting off of the suction may changed.

14. In an ignition controller, the combination with an engine having an intake conduit and a throttle valve; of an ignition timer; a suction actuated setting device therefor;

means providing for passages between the suction setting device and the intake conduit at portions thereof above and: below the throttle valve; and means for restricting the passage in varying proportions theone to the other.

15: In an ignition controller, the combination with an engine having an intake conduit and a throttle valve; of an ignition timer; a suction actuated setting device therefor; means providing for passages between the'suction setting device and the intake conduit at portions thereof above and below the throttle; and means controlled by throttle movementv to throttle,

1,2eense the movement ofthe throttle for restricting the passages in varying proportions the one to the other, said means being effective over a certain range of throttle movement.

-16. In an ignition controller, the combination with an engine having an intake con-v duit and a throttle ,valve; of an'ignition timer; a suction actuated setting device therefor;

"tween the suction setting device and the intake conduit at portions thereof above and means providing for passages bebelow the throttle; and means controlled by the movement of the throttle for restricting the passages in varying proportions the one to the other; said means beingrefi'ective over a certain range of ,throttle movement, said means being adjustablewhereby said means may be made to act over'a difierent range of throttle movement.-

17. In an ignltion controller, the combi= nation with an engine having an intake conduit and a throttle valve; of an ignition timer; -a suction actuated setting device therefor; a' conduit connecting the suction setting device with the intake conduit at a point above the throttle, said conduit including a plug member having a tapered hole formed therein, said plug located adjacent the intake conduit; and a tube connected with the throttle valve having one end thereof movable in the tapered hole of the plug; and the other end communicatin with the portion of the intake conduit ielow throttle.

18. In an ignition controller, the combination with an engine having an intake conduit and a throttle valve; of an ignition timer; a

suction actuated setting device therefor; a conduit connecting the suction setting devic with the intake conduit at a point above the her having a tapered hole formed therein,

said conduit including a plug memsaid plug located adjacent the intake con- 1 duit; anda tube connected with the throttle valve having one end thereof movable in the tapered hole of the plug; and the other end 'communicatin with the portion of the intake conduit vary the effective-suction in the suction. settin tioiis of the throttle.-

In testimony whereof o. B. "s'roNE.

elow the throttle, said plug being adjustable relatively to the tube to device correspondingto various pos1- I aflizi my signature. I i 

